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Finding the Fourth Proportional to 196.09, 270.73 and 122.44

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Solution

The fourth proportional to 196.09, 270.73 and 122.44 is: 169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.09 : 270.73 = 122.44 : x
  2. Step 2: Convert to fraction form
    196.09/270.73 = 122.44/x
  3. Step 3: Cross multiply
    196.09x = 270.73 × 122.44
  4. Step 4: Simplify right side
    196.09x = 33,148.18
  5. Step 5: Solve for x
    x = 33,148.18/196.09
  6. Step 6: Final answer
    x = 169.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.